EP3374710B1 - Door driving system and refrigerator including the same - Google Patents
Door driving system and refrigerator including the same Download PDFInfo
- Publication number
- EP3374710B1 EP3374710B1 EP17775717.6A EP17775717A EP3374710B1 EP 3374710 B1 EP3374710 B1 EP 3374710B1 EP 17775717 A EP17775717 A EP 17775717A EP 3374710 B1 EP3374710 B1 EP 3374710B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- door
- power
- motor
- refrigerator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/614—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
- E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
- E06B3/36—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement with a single vertical axis of rotation at one side of the opening, or swinging through the opening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/10—Braking arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/028—Details
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
- E05Y2201/214—Disengaging means
- E05Y2201/216—Clutches
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/404—Function thereof
- E05Y2201/422—Function thereof for opening
- E05Y2201/426—Function thereof for opening for the initial opening movement
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/624—Arms
- E05Y2201/626—Levers
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/71—Toothed gearing
- E05Y2201/72—Planetary gearing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/65—Power or signal transmission
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
- E05Y2800/20—Combinations of elements
- E05Y2800/242—Combinations of elements arranged in parallel relationship
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
- E05Y2900/31—Application of doors, windows, wings or fittings thereof for domestic appliances for refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/02—Details of doors or covers not otherwise covered
- F25D2323/021—French doors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/02—Details of doors or covers not otherwise covered
- F25D2323/024—Door hinges
Definitions
- the motor M is configured to open or close the door D according to a predetermined speed pattern on the basis of the control signal received from the controller. More specifically, the controller receives a position signal representing the position of the door D from an encoder E, and generates the control signal on the basis of the position signal.
- auxiliary device 30 applied to a door driving system of the refrigerator in accordance with an embodiment of the present invention will be described below.
- the slide member 34 extends to be long and is configured to be slidable in a direction in which it extends.
- the auxiliary pressurizing member 32 is installed at one end part 341 of the slide member 34, and power is supplied to another end part 342 of the slide member 34 from the power transfer device 40.
- the auxiliary pressurizing member 32 includes a collision part 321 which collides against the front surface of the housing H as the auxiliary pressurizing member 32 is rotated about the axis of rotation T2.
- the door driving system 100 of the refrigerator in accordance with the present embodiment further includes the clutch device 101 configured to selectively transfer power of the motor M to the hinge Z. That is, the clutch device 101 causes either a power transfer state Px in which the power of the motor M is transferred to the hinge Z or a non-power transfer state Qx in which the power of the motor M is not transferred to the hinge Z to be performed.
- the clutch device 101 in accordance with the present embodiment includes a locking device 400 which selectively limits rotation of the carrier 304. That is, the locking device 400 causes either a locked state Rx in which the carrier 304 is fixed not to rotate carrier 304 or an unlocked state Sx in which the carrier 304 is not fixed and thus the carrier 304 is rotatable to be performed.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Refrigerator Housings (AREA)
Description
- The present invention relates to a refrigerator including a door driving system to be used to open or close a door of the refrigerator.
- As disclosed in
Japanese patent application publication No. 2002-257466 - Furthermore, there may be a door driving system in which a plurality of gears are interposed between an output shaft of a motor and a hinge of a door to automatically open or close the door, and are rotated by power generated by the motor to transmit the power of the motor to the door, thereby opening or closing the door.
- However, in the above structure, if the plurality of gears are engaged with each other when the door which is at a closed position is to be opened, a torque needed to overcome a magnetic force between the door and a housing increases and thus the size of the motor should be increased accordingly.
-
JPH08-23249 - Therefore, it is an aspect of the present invention to provide a refrigerator including a door driving system , which is capable of reducing a torque needed to remove a magnetic force between a door and a housing.
- Additional aspects of the invention will be set forth in the description which follows, whereby the invention is only defined by the appended claims.
- In accordance with the present invention, there is provided a refrigerator according to claim 1. Optional features are set out in the dependent claims.
- According to the present invention, it is possible to reduce the torque required to remove the magnetism of the door and the case, thereby miniaturizing the motor and miniaturizing the entire device.
-
-
FIG. 1 is a schematic view showing an installation state of a door driving system of the refrigerator. -
FIG. 2 is a perspective view of a door driving system of the refrigerator. -
FIG. 3 is a plan view of a door driving system of the refrigerator. -
FIG. 4 is a plan view showing the operation of an auxiliary device in a door driving system of the refrigerator. -
FIG. 5 is a perspective view of the configuration of the planetary gear unit. -
FIG. 6 is an exploded perspective view of the planetary gear unit. -
FIG. 7A ,7B and7C are plan views showing the operation of the clutch device in the refrigerator. - Hereinafter, a door driving system of a refrigerator in accordance with an embodiment of the present invention will be described with reference to the accompanying drawings.
- As illustrated in
FIG. 1 , a refrigerator R to which a door driving system in accordance with an embodiment of the present invention is applied includes a housing H having an open front surface, and two doors D installed at left and right sides of the front of the housing H to open or close an opening of the housing H. The two doors D are rotatably supported by hinge Z, respectively. -
Door driving systems 100 of the refrigerator are configured to individually open or close the two doors D of the refrigerator R, and installed to be respectively accommodated in casings C provided on the two doors D. - In the present embodiment, the
door driving systems 100 of the refrigerator are bisymmetrical. Thus, thedoor driving system 100, which is configured to open or close the right door D will be described with reference toFIG. 1 below. - As illustrated in
FIGS. 2 to 4 , thedoor driving system 100 includes adriving device 10 which generates power for opening or closing the door D and transfers the power to the door D, and anauxiliary device 30 which assists in opening the door D which is at a closed position. - First, a structure of the
driving device 10 will be described. As illustrated inFIGS. 2 to 4 , thedriving device 10 includes a motor M which generates power, and apower transfer device 40 which transfers the power generated by the motor M to the door D via the hinge Z. - The motor M is installed to be accommodated in the casing C on the door D. An output shaft of the motor M makes normal rotation or reverse rotation according to a control signal received from a controller (not shown).
- In the present embodiment, the motor M is configured to open or close the door D according to a predetermined speed pattern on the basis of the control signal received from the controller. More specifically, the controller receives a position signal representing the position of the door D from an encoder E, and generates the control signal on the basis of the position signal.
- The
power transfer device 40 is arranged between the motor M and the hinge Z, includes a plurality ofdriving gears 45 rotated linked with the motor M and a missing-teeth gear 46 installed at the hinge Z, and is configured to transfer power of the motor M to the hinge of the door D only through rotation of thegears driving gears 45 may be a worm gear 47 (including a worm and a worm wheel) connected to the output shaft of the motor M. - The
auxiliary device 30 applied to a door driving system of the refrigerator in accordance with an embodiment of the present invention will be described below. - The
auxiliary device 30 generates auxiliary power for opening the door D. In the present embodiment, theauxiliary device 30 is installed to be accommodated in the casing C on the door D. - As illustrated in
FIGS. 3 and4 , theauxiliary device 30 is installed to be slidable, and includes aslide member 34 which receives the power of the motor M and is slid by the power, and an auxiliary pressurizingmember 32 which is rotatable around an axis of rotation T2 while being linked with sliding of theslide member 34. The auxiliary pressurizingmember 32 comes in contact with the housing H while being rotated around the axis of rotation T2 to supply the auxiliary power to the door D. - The
slide member 34 extends to be long and is configured to be slidable in a direction in which it extends. The auxiliary pressurizingmember 32 is installed at oneend part 341 of theslide member 34, and power is supplied to anotherend part 342 of theslide member 34 from thepower transfer device 40. - The auxiliary pressurizing
member 32 includes a passing-throughmember 322 installed to pass through a passing-throughhole 31a formed in theend part 341 of theslide member 34. The auxiliary pressurizingmember 32 may be installed in theslide member 34 by inserting the passing-throughmember 322 into the passing-throughhole 31a. - The auxiliary pressurizing
member 32 includes acollision part 321 which collides against the front surface of the housing H as the auxiliary pressurizingmember 32 is rotated about the axis of rotation T2. - As illustrated in
FIG. 4 , due to the above structure, as theslide member 34 slides toward theend part 341 from theother end part 342, the auxiliary pressurizingmember 32 is rotated about the axis of rotation T2. The passing-throughmember 322 may serve as a point of application of force and thecollision part 321 serves as a point of action. Thus, the auxiliary power transferred via thecollision part 321 acts on the door D. Accordingly, a magnetic force between the door D and the housing H may be overcome. - A
clutch device 101 applied to a door driving system will be described below. - As illustrated in
FIGS. 3 and4 , thedoor driving system 100 of the refrigerator in accordance with the present embodiment further includes theclutch device 101 configured to selectively transfer power of the motor M to the hinge Z. That is, theclutch device 101 causes either a power transfer state Px in which the power of the motor M is transferred to the hinge Z or a non-power transfer state Qx in which the power of the motor M is not transferred to the hinge Z to be performed. - When the
clutch device 101 is switched to the non-power transfer state Qx and thus the power of the motor M is not transferred to the hinge Z, theauxiliary device 30 generates auxiliary power to move the door D, which is at the closed position, in an opening direction. - As illustrated in
FIGS. 3 and4 , theclutch device 101 is interposed between the motor M and the hinge Z, and configured to receive power from the motor M and to be switched to the power transfer state Px or the non-power transfer state Qx only by the power of the motor M. In the present embodiment, aplanetary gear unit 300 is used as theclutch device 101. - As illustrated in
FIGS. 5 and6 , theplanetary gear unit 300 includes asun gear 301 rotated linked with the motor M, a plurality ofplanetary gears 302 having teeth engaged with those of thesun gear 301, aninternal gear 303 having internal teeth engaged with the teeth of the plurality ofplanetary gears 302 and rotated linked with the door D, and acarrier 304 which supports the plurality ofplanetary gears 302 to be rotated on axes thereof. Here, thesun gear 301, the plurality ofplanetary gears 302, and theinternal gear 303 are some of the plurality ofdriving gears 45 which will be described below. - Due to the above structure, when the
sun gear 301 is rotated by power of the motor M, the plurality ofplanetary gears 302 are rotated on the axes thereof or revolve by the rotation of thesun gear 301. When the plurality ofplanetary gears 302 are rotated on the axes thereof, theinternal gear 303 is rotated in a direction opposite to a direction of the rotation of thesun gear 301. When the plurality ofplanetary gears 302 revolve, thecarrier 304 is rotated in the direction of the rotation of thesun gear 301. - More specifically, the
carrier 304 is rotated linked with the rotation of thesun gear 301 in a state in which theinternal gear 303 is fixed, and theinternal gear 303 is rotated linked with the rotation of thesun gear 301 in a state in which thecarrier 304 is fixed. That is, the power of the motor M applied to thesun gear 301 is output to theinternal gear 303 or thecarrier 304. - When one of the
internal gear 303 and thecarrier 304 is rotated in a state in which thesun gear 301 is fixed, the other is rotated since thesun gear 301 is fixed. - To explain the door driving system of the refrigerator differently, the refrigerator includes a planetary gear unit and at least one drive gear coupling the planetary gear to the motor, and the at least one drive gear and the planetary gear unit cooperate together to transfer the power output by the motor to the hinge to move the hinge and thereby open or close the door, without transferring a turning force generated by the hinge to the motor.
- And at least one drive gear coupling the motor to the sun gear, when the hinge generates a turning force, the internal gear is rotated by the turning force with the at least one drive gear preventing the sun gear from rotating, which thereby causes the planetary gear to revolve, and thus the turning force is not transferred to the motor.
- As illustrated in
FIGS. 7A to 7C , theclutch device 101 in accordance with the present embodiment includes alocking device 400 which selectively limits rotation of thecarrier 304. That is, thelocking device 400 causes either a locked state Rx in which thecarrier 304 is fixed not to rotatecarrier 304 or an unlocked state Sx in which thecarrier 304 is not fixed and thus thecarrier 304 is rotatable to be performed. - More specifically, the
locking device 400 includes dentedparts 401 formed in an outer circumference surface of thecarrier 304, a lockingmember 402 configured to be moved to advance or retreat between a locked position rp at which the lockingmember 402 is wedged in one of the dentedparts 401 in the locked state Rx and a withdrawn position sp at which the lockingmember 402 is separated from the dentedpart 401 in the unlocked state Sx, and a pressurizingmember 403 configured to pressurize the lockingmember 402 toward the locked position rp from the withdrawn position sp. - The dented
parts 401 are provided on a plurality of points (two points in the present embodiment) on the outer circumference surface of thecarrier 304 at regular intervals in a circumferential direction. In the present embodiment, the dentedparts 401 are formed in an inwardly dented form in the outer circumference surface of thecarrier 304. - As illustrated in
FIG. 7C , when thecarrier 304 is rotated to cause one of the dentedparts 401 to reach a position corresponding to the lockingmember 402, the lockingmember 402 is wedged into the dentedpart 401 and is then in the locked position rp. - As illustrated in
FIGS. 7A and7B , when any one of the dentedparts 401 is not at the position corresponding to the lockingmember 402, the lockingmember 402 is not wedged into any one of the dentedparts 401. Thus, when the lockingmember 402 is in contact with a position on the outer circumference surface of thecarrier 304 other than the dentedparts 401, the lockingmember 402 is maintained at the withdrawn position sp. - That is, the rotation of the
carrier 304 is not interfered with the lockingmember 402 when the lockingmember 402 is at the withdrawn position sp, and is limited by the lockingmember 402 when the lockingmember 402 is at the locked position rp. The lockingmember 402 in the present embodiment has a sphere shape but is not limited thereto. - The pressurizing
member 403 is formed in the form of a spring having an elastic force or the like, and one end part thereof is fixed onto the casing C.The pressurizing member 403 in accordance with the present embodiment may apply an elastic force to the lockingmember 402 to overcome pressure applied by the pressurizingmember 403 and to be moved from the locked position rp to the withdrawn position sp, when a force applied to thecarrier 304 in a direction of rotation is greater than or equal to a predetermined level in a state in which the lockingmember 402 is at the locked position rp. - As described above, since the
locking device 400 is provided, thecarrier 304 is not rotated and theinternal gear 303 is rotated in the locked state Rx in which the lockingmember 402 is at the locked position rp, and theinternal gear 303 is not rotated and thecarrier 304 is rotated in the unlocked state Sx in which the lockingmember 402 is at the withdrawn position sp. - In the present embodiment, as illustrated in
FIG. 7B , apower conversion device 70 is arranged between thepower transfer device 40 and theauxiliary device 30 to convert a force acting in a direction of rotation to be transferred by thepower transfer device 40 into a force acting in a direction in which theslide member 34 of theauxiliary device 30 slides. More specifically, thepower conversion device 70 is arranged between theslide member 34 and thecarrier 304 to convert a force acting on thecarrier 304 in the direction of rotation into the force acting in the direction in which theslide member 34 slides. - The
power conversion device 70 in accordance with the present embodiment is a socalled latch mechanism, and includes rotation parts 72 (tworotation parts 72 in the present embodiment) installed on a bottom surface of thecarrier 304 and rotated linked with thecarrier 304, and ahook part 71 installed on theother end part 342 of theslide member 34 and selectively engaged with one of therotation parts 72 according to a direction of rotation of thecarrier 304. - More specifically, the
carrier 304 is arranged adjacent to theother end part 342 of theslide member 34 and thus one of therotation parts 72 rotated together with thecarrier 304 pressurizes thehook part 71 when thecarrier 304 is rotated in a forward direction due to normal rotation of the motor M. When one of therotation parts 72 pressurizes thehook part 71, power acting in the direction of rotation of thecarrier 304 is converted through thehook part 71 into power acting in the direction in which theslide member 34 slides and is then transferred to theslide member 34. Thus, theauxiliary pressurizing member 32 is rotated simultaneously with sliding of theslide member 34, thecollision part 321 collides against the housing H, and then auxiliary power is applied to the door D. Accordingly, a magnetic force between the door D and the housing H may be overcome. - Furthermore, as described above, a latch mechanism is employed as the
power conversion device 70 in accordance with the present embodiment. When the motor M makes reverse rotation to rotate thecarrier 304 in a backward direction, thehook part 71 is away from a moving path of therotation parts 72 and thus therotation parts 72 are not coupled to thehook part 71. Accordingly, rotation of thecarrier 304 is not interfered. - An operation of the
door driving system 100 of the refrigerator in accordance with the present embodiment will be described below. - First, a case in which the door D which is at the closed position is moved in an opening direction will be described below.
- First, when the motor M is driven by a control signal received from the controller, either the
worm gear 47 which is an element of thedriving gear 45 or thesun gear 301 is rotated. In this case, the lockingmember 402 is at the withdrawn position sp, thelocking device 400 is in the unlocked state Sx, and theclutch device 101 is in the non-power transfer state Qx (seeFIG. 7A ). - In this state, when the
sun gear 301 is rotated, theinternal gear 303 is not rotated and thecarrier 304 is rotated. Since therotation parts 72 are rotated together with thecarrier 304, one of the tworotation parts 72 comes in contact with the hook part 71 (seeFIG. 7B ). Thereafter, as thecarrier 304 is continuously rotated, therotation part 72 pressurizes thehook part 71. Thus, theslide member 34 slides and a magnetic force between the door D and the housing H may be overcome by auxiliary power. - After the magnetic force between the door D and the housing H is overcome, when the
carrier 304 is continuously rotated and thus one of the dentedparts 401 in the outer circumference surface of thecarrier 304 reaches a position corresponding to the pressurizingmember 403, the lockingmember 402 is wedged into one of the dentedparts 401 due to pressure applied by the pressurizingmember 403 and is thus moved from the withdrawn position sp to the locked position rp. Thus, thelocking device 400 is switched from the unlocked state Sx to the locked state Rx and theclutch device 101 is switched from the non-power transfer state Qx to the power transfer state Px (seeFIG. 7C ). - When the
locking device 400 is switched to the locked state Rx, thecarrier 304 cannot be rotated. Thus, thecarrier 304 is not rotated and theinternal gear 303 is rotated by the rotation of thesun gear 301. Thus, the power of the motor M transferred to thesun gear 301 is output through theinternal gear 303 and is then transferred to the hinge Z of the door D through the driving gears 45 or the missing-teeth gear 46 between theinternal gear 303 and the hinge Z of the door D, thereby moving the door D in the opening direction. - Next, a case in which the door D which is in the opened state is moved in a closing direction will be described below.
- First, when the motor M is driven by a control signal received from the controller, either the
worm gear 47 which is an element of thedriving gear 45 or thesun gear 301 is rotated. In this case, the lockingmember 402 is at the locked position rp, thelocking device 400 is in the locked state Rx, and theclutch device 101 is in the non-power transfer state Qx (FIG. 7C ). - In this state, the power of the motor M is transferred to the hinge Z of the door D through the
driving gear 45 or the missing-teeth gear 46. Thus, the door D is moved in the closing direction and is finally moved to the closed position due to a magnetic force between the door D and the housing H. Since theinternal gear 303 is locked in a state in which the door D is at the closed position, rotation of thesun gear 301 is transferred to thecarrier 304. Furthermore, when the motor M is further instantaneously driven in the closing direction right after the door D is closed, the lockingmember 402 may overcome pressure applied by the pressurizingmember 403 and thus be moved from the locked position rp to the withdrawn position sp. At the same time, thelocking device 400 is switched from the locked state Rx to the unlocked state Sx. - Next, a case in which the door D is moved in the opening direction or the closing direction, i.e., a user tries to move the door D in a backward direction will be described below. In this case, the
internal gear 303 is rotated in the backward direction while being linked with the door D, but thesun gear 301 is not rotated since theworm gear 47 is coupled to the output shaft of the motor M. Thus, the rotation of theinternal gear 303 is transferred to thecarrier 304, and the lockingmember 402 wedged into one of the dentedparts 401 is moved from the locked position rp to the withdrawn position sp when a force which is greater than or equal to a predetermined level is applied to thecarrier 304. Thus, thelocking device 400 is switched from the locked state Rx to the unlocked state Sx and theclutch device 101 is switched from the power transfer state Px to the non-power transfer state Qx. Thus, the force applied to the door D by the user to move the door D in the backward direction is not transferred to the motor M. Accordingly, the motor M or these gears are prevented from being damaged. - Next, a case in which the door D is manually opened or closed will be described below.
- When the door which is at the closed position is manually opened or closed, rotation of the
internal gear 303 linked with the door D is transferred to thecarrier 304 since theworm gear 47 is coupled to the output shaft of the motor M. In this case, thelocking device 400 is in the unlocked state Sx, theclutch device 101 is in the non-power transfer state Qx, and thus the force applied to the door D by the user to move the door D is not transferred to the motor M. Accordingly, the user may easily move the door D. - In the
door driving system 100 having the above structure of the refrigerator, theclutch device 101 is in the non-power transfer state Qx when theauxiliary device 30 generates auxiliary power and thus a magnetic force between the door D and the housing H in a state in which power of the motor M is not transferred to the hinge Z may be overcome. Thus, a torque needed to overcome the magnetic force between the door D and the housing H may be reduced. - Furthermore, the
door driving system 100 of the refrigerator includes theplanetary gear unit 300 serving as a speed reducer and may thus reduce the speed of rotation of the motor M through the gears of theplanetary gear unit 300. Therefore, the number of spur gears to be arranged in a direction of a plane to reduce the speed of the rotation of the motor M may be reduced and thus thedoor driving system 100 for use in a refrigerator may be manufactured to be compact. - In the present embodiment, when a force which is greater than or equal to a predetermined level is applied to a carrier, an elastic force of a pressurizing member is appropriately determined to move a locking member from a locked position to a withdrawn position. Alternatively, in other examples that are not covered by the claimed invention, the locking member may be moved using a torque limiter from the locked position to the withdrawn position.
- In the present embodiment, two rotation parts are arranged on a rear surface of the carrier. Alternatively, in other examples that are not covered by the claimed invention, one or three or more rotation parts may be arranged on the rear surface of the carrier.
- Furthermore, in the present embodiment, a missing-teeth gear having teeth only in some arch-shaped sections thereof is installed at a hinge. Alternatively, in other examples that are not covered by the claimed invention, a gear having teeth in entire round sections thereof may be installed at the hinge.
- In addition, a door driving system of the refrigerator has been described above in the present embodiment but in other examples, that are not covered by the claimed invention, the door driving system is applicable to various devices .
- Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the scope of the invention which is only defined by the claims.
Claims (10)
- A refrigerator (R) comprising:a hinge (Z);a door (D) rotatably installed at a housing (H) of the refrigerator, whereby the door (D) can rotate via the hinge (Z) to open and close;a door driving system (100) comprising a driving device (10) including a motor (M) to generate and output power for opening and closing the door (D), whereby the driving device (10) can transfer the power to the door (D), and an auxiliary device (30) to generate auxiliary power from the power output by the motor (M) to assist in opening the door (D), when the door (D) is at a closed position,wherein the driving device (10) further comprises a power transfer device (40) to transfer the power generated by the motor (M) to the hinge (Z) to open and close the door (D), andwherein the power transfer device (40) comprises a clutch device (101) to selectively transfer the power of the motor (M) to the hinge (Z) or the auxiliary device (30) by switching between a first power transmitting state (Px) for transmitting the power of the motor (M) to the hinge (Z) and a second power transmitting state (Qx) for not transmitting the power of the motor (M) to the hinge (Z) but transmitting the power to the auxiliary device (30);the clutch device (101) comprises a planetary gear unit (300) comprising:a sun gear (301) linked with the motor (M);a planetary gear (302) linked with the sun gear (301);an internal gear (303) linked with the planetary gear (302) and configured to transfer the power output by the motor (M) to the hinge (Z) in the first power transmitting state (Px) of the clutch device (101);a carrier (304) linked with the planetary gear (302) and configured to transfer the power output by the motor (M) to the auxiliary device (30) in the second power transmitting state (Qx) of the clutch device (101); andthe refrigerator further comprises a locking device (400) to selectively put the carrier (304) in an unlocked state in which the carrier (304) is rotatable and in a locked state in which rotation of the carrier (304) is limited; andcharacterised in that:
the sun gear (301), the planetary gear (302), the internal gear (303) and the carrier (304) cooperate together so that:when the clutch device (101) is in the first power transmitting state (Px), the carrier (304) is in the locked state, the sun gear (301) is rotated by the power output by the motor (M), and the planetary gear (302) rotates about a rotation axis to transfer the power output by the motor (M) to the internal gear (303) to thereby move the hinge (Z) to automatically open or close the door (D), andwhen the clutch device (101) is in the second power transmitting state (Qx), the carrier (304) is in the unlocked state, the sun gear (301) is rotated by the power output by the motor (M), and the planetary gear (302) revolves to transfer the power output by the motor (M) to the carrier (304) to thereby move the door (D) in the opening direction from the closed position. - The refrigerator (R) according to claim 1, wherein the internal gear (303) comprises internal teeth engaged with teeth of the planetary gear (302), and is rotated by the internal teeth when the planetary gear (302) is rotated about the rotation axis to transfer the power output by the motor (M) to the internal gear (303).
- The refrigerator (R) according to claim 1, wherein the carrier (304) is engaged with teeth of the planetary gear (302) and is rotatable, and
the planetary gear (302) revolves when the carrier (304) is rotated in the unlocked state. - The refrigerator (R) according to claim 1, wherein the carrier (304) comprises a dented part (401) formed in an outer circumference surface thereof, and
the locking device (400) comprises:
a locking member (402) to be selectively wedged into the dented part (401) as the carrier (304) is rotated, and a pressurizing member (32) to pressurize the locking member (402) against an outer surface of the carrier (304). - The refrigerator (R) according to claim 1, wherein when the internal gear (303) is rotated by a turning force generated in the hinge (Z) and the carrier is in the unlocked state, the planetary gear (302) revolves and does not transmit the turning force to the motor (M).
- The refrigerator (R) according to claim 1, wherein the auxiliary device (30) comprises:a slide member (34) which is slidable,a power conversion device (70) coupled to an end part of the slide member (34) and configured to cause the slide member (34) to slide as the carrier (304) is rotated from the power of the motor (M) being transferred to the carrier (304) with the carrier (304) being in the rotatable state, andan auxiliary pressurizing member (32) coupled to another end part of the slide member (34) and, with the door (D) being closed, rotate, linked with the sliding of the slide member (34), to pressurize the door (D), to thereby move the door (D) in an opening direction.
- The refrigerator (R) according to claim 6, wherein the carrier (304) comprises a rotation part (72) arranged above the carrier (304) and rotated together with the carrier (304), and
the power conversion device (70) comprises a hook part (71) to be selectively engaged with the rotation part (72) according to a direction of rotation of the carrier (304). - The refrigerator (R) according to claim 4, wherein the locking member (402) is provided to overcome pressure applied by the pressurizing member (32) and to be moved from a locked position to a withdrawn position when a turning force generated by the hinge (Z) applied to the carrier (304) is greater than or equal to a predetermined level in a state in which the locking member (402) is in the locked position.
- The refrigerator (R) according to claim 1, wherein, when a turning force is generated by the hinge (Z), the planetary gear (302) is provided to sequentially transfer the turning force to the internal gear (303), the planetary gear (302), and the carrier (304) and not to transfer the turning force to the sun gear (301).
- The refrigerator (R) according to claim 1, wherein, after the door (D) is moved in an opening direction by the auxiliary power generated by the auxiliary device (30), the locking device (400) puts the carrier (304) in the locked state from the unlocked state, thereby transferring the power output by the motor (M) to the hinge (Z) through the internal gear (303).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016068812A JP2017180957A (en) | 2016-03-30 | 2016-03-30 | Door opening/closing mechanism for refrigerator |
KR1020160118113A KR102655160B1 (en) | 2016-03-30 | 2016-09-13 | Door driving system and refrigerator for the same |
PCT/KR2017/003018 WO2017171292A1 (en) | 2016-03-30 | 2017-03-21 | Door driving system and refrigerator including the same |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3374710A1 EP3374710A1 (en) | 2018-09-19 |
EP3374710A4 EP3374710A4 (en) | 2018-12-19 |
EP3374710B1 true EP3374710B1 (en) | 2022-09-14 |
Family
ID=60006777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17775717.6A Active EP3374710B1 (en) | 2016-03-30 | 2017-03-21 | Door driving system and refrigerator including the same |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3374710B1 (en) |
JP (1) | JP2017180957A (en) |
KR (1) | KR102655160B1 (en) |
CN (1) | CN108713125B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102412016B1 (en) * | 2017-05-17 | 2022-06-22 | 삼성전자주식회사 | Refrigerator |
CN110700713B (en) * | 2018-07-09 | 2021-03-23 | 海尔智家股份有限公司 | Door body hinge device for refrigerator and refrigerator |
CN110748264A (en) * | 2018-07-24 | 2020-02-04 | 博西华电器(江苏)有限公司 | Household electrical appliance |
NO345663B1 (en) * | 2019-04-02 | 2021-06-07 | Wheel Me As | Drive unit for moving a door relative to a door's opening. |
CN116374016B (en) * | 2023-06-05 | 2023-08-22 | 劳士领汽车配件(昆山)有限公司 | Unidirectional locking actuator and locking method thereof |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB872577A (en) * | 1957-10-02 | 1961-07-12 | Anderson Co | Door opening device |
JPH0823249B2 (en) * | 1990-04-16 | 1996-03-06 | 株式会社三協精機製作所 | Door opening / closing mechanism |
JPH09127599A (en) * | 1995-08-31 | 1997-05-16 | Nikon Corp | Opening/closing device for light shielding door of film cartridge |
JP3442276B2 (en) * | 1998-02-02 | 2003-09-02 | 株式会社三協精機製作所 | Drawer drive |
CN2508189Y (en) * | 2001-11-16 | 2002-08-28 | 夏道萍 | Door opening device for electric refrigerator |
JP4143568B2 (en) * | 2004-05-12 | 2008-09-03 | 日立アプライアンス株式会社 | Refrigerator door opening / closing device or door closing device |
DE202005011427U1 (en) * | 2005-07-20 | 2006-11-23 | Liebherr-Hausgeräte Ochsenhausen GmbH | Fridge and / or freezer |
DE102009053991B3 (en) * | 2009-11-20 | 2011-03-17 | Bode, Jürgen | Door operator for a swing door of a passenger transport vehicle |
JP6149690B2 (en) * | 2013-10-28 | 2017-06-21 | アイシン精機株式会社 | Vehicle door opening and closing device |
JP6385733B2 (en) * | 2014-06-30 | 2018-09-05 | アクア株式会社 | refrigerator |
KR101618552B1 (en) * | 2014-09-05 | 2016-05-09 | 엘지전자 주식회사 | Closing and opening device for refrigerator door and control method of the same |
JP6774206B2 (en) * | 2015-10-05 | 2020-10-21 | 三星電子株式会社Samsung Electronics Co.,Ltd. | Refrigerator door opening / closing mechanism |
-
2016
- 2016-03-30 JP JP2016068812A patent/JP2017180957A/en active Pending
- 2016-09-13 KR KR1020160118113A patent/KR102655160B1/en active IP Right Grant
-
2017
- 2017-03-21 CN CN201780010600.8A patent/CN108713125B/en active Active
- 2017-03-21 EP EP17775717.6A patent/EP3374710B1/en active Active
Also Published As
Publication number | Publication date |
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CN108713125B (en) | 2020-11-13 |
CN108713125A (en) | 2018-10-26 |
KR102655160B1 (en) | 2024-04-08 |
JP2017180957A (en) | 2017-10-05 |
EP3374710A1 (en) | 2018-09-19 |
EP3374710A4 (en) | 2018-12-19 |
KR20170112924A (en) | 2017-10-12 |
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